May 1 (GMM) Ron Dennis has vehemently denied suggestions that he could be the unknown figure behind the covert investigation that triggered the Max Mosley sex scandal.

Mosley, who faces a confidence vote in his FIA presidency next month, recently openly questioned the origin of the News of the World revelations.

He wrote in a letter to FIA affiliates in April that he had been pursued not by the tabloid newspaper, but for "reasons and clients as yet unknown".

The scandal aroused suspicions that Dennis may have ordered the investigation into Mosley's private life, in retaliation for the devastating 'spy scandal' and penalties of 2007.

"I categorically deny that I have anything to do with the News of the World's investigation into Mr Mosley," Dennis, chairman of the McLaren Group, told the Times.

He also denied that "anyone" connected with his company, or anyone acting on his behalf, had anything to do with the revelations.

Dennis has written to Czech Automobile Association chief Radovan Novak, who recently intimated on Prague radio that the spy and sex scandals may share Dennis as the common link, for a clarification of his remarks.

Dennis confirmed that he is looking for Novak, a close ally of Mosley's, to "withdraw or correct" his statements.

It emerged just this week that Mosley has engaged an expert detective agency, Quest, to identity the source of the News of the World story.